Stop-motion for looms.



PATENTBD JUNE 28, 1904.

J. M. GREY. STOP MOTION FOR'LOOMS.

APPLICATION FILED NOV. 24, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

II L

"Ill

N VEN 7-0 FF W/ TN E6 6 ERS NQTON u c Npnms PETER5 co. wow-Lama. vusm 2SHEETS-SHEET 2.

N0 MODEL.

UNITED STATES Patented d'une as, 1904.

PATENT OFFICE.

JAMns MrrcHEL L GREY, or BURNLEY, ENGLAND.

' sToP-MoTloN FOB Looms.

SPECIFICATION forming pm of Letters Patent No. 763,556, dated June '28,1904.

Original application filed September 4, 1903, Serial No. 171,937.Divided and this application filed November 24, 1903. Serial N0.182,527.(No model.)

To all whom it may concern:

Be it known that I, JAMnsMrro inLL GREY,

cotton manufacturer, of 1 Colne road, Burnapplication for patent, SerialNo. 171,937,

and of which this case is a division, and this automatic stop-motion isdesigned to prevent the change taking place should the shuttle becometrapped in the shed, and also to stop the loom should theshuttle-magazine become empty. In my aforesaid automatic shuttlechanging mechanism three pulleys are employed, the inner pulley having acannon-pinion to drive the shuttlechanging mechanism, the center pulleybeing a loose pulley, and the outside pulley being the fast pulley forrunning the loom. In connection with this arrangement of pulleys is aspeciallyconstructed weft-fork slide. The weft-fork slide,'or a plateattached to it, is made with an open notch or slot longitudinally,sothat when the weft fork is drawn back by engagement with the hammer thespring-handle will pass into this slot or notch,and thereby put inmotion the-shuttle-changing mechanism through the medium of the insidepulley,and when the change has been effected mechanical means arebrought into play to move the springhandle forward into a notch in thechurch, which retains the spring-hand 1e, and the driving-belt now turnsthe outside or fast drivingpulley; but when the loom is required to bestopped by the weaver the springhandle is withdrawn by hand, when itfalls against a projection on the fork-slide.

My improved automatic stop-motion is devised to stop the loom byshifting the drivingbelt onto the loose pulley instead of putting inmotion the automatic change should a shuttle become trapped in the shed,which would otherwise be the case were not my iming the parts indifferent positions.

proved automatic stop motion brought into action.

In the accompanying sheet of drawings, Figure 1 is an elevation of myimproved automatic stop-motion particularly applicable for use inconjunction with my improved automatic shuttlechanging mechanismdescribed in my aforesaid United States application for patent, SerialNo. 171,937. Fig. 2 is a similar view of portion of Fig. 1, but show-Fig. 3 isa front view of Fig. 1. Fig. 4 is a plan View of the same. Fig.5 is adetail view of the weft-fork lever.

On the frame 1 of the loom near the springhandle 13 I mount a lever 77which is fulcrumed at 78 and has one end shaped to meet the forwardmovement of one end of an elbow-lever 79, which is fixed on a shaft 80,carried in brackets 81, secured to the slay 82 of the loom. The otherend of the elbow-lever 79 is held by its own weight or by a springpressed against the ordinary swell or side spring 83 of the shuttle-box26. When a shuttle'36 enters the box 26 and presses the swell 83outward, as shown in Fig. 2, the elbow-lever 79 is tilted back, and itsfront end being raised it misses (when the slay moves forward and heatsup) the lower end of the double lever 77; but When there is no shuttlein the box and the slay moves forward the elbow-lever 79 remains in theposition shown in Fig. 1, and meeting the lower end of the lever 77 itmoves its upper end forward into the path of the spring-handle 13,which, owing to the failure of weft, is released or knocked off in theordinary way and unless blocked by the end of the lever 77 would flyinto the notch 16 in the weft-fork lever 17, and so start the automaticshuttle-changing motion, as described in my aforesaid specification; butthe movement of the spring-handle 13 being checked by the lever 77, asherein described, the driving-belt is only moved from the fast pulley tothe loose pulley and the loom is stopped. A I-shaped or other suitablespring 8 1(see Fig. 4:) is employed to lock the lever 77 and prevent itfrom moving too freely out of its vertical position.

It will be readily understood that the weaver can at any time place andset the upper end of the lever 77 in the path of the spring-handle 18,so as to prevent the automatic shuttling motion from coming into action,and under these conditions the loom can be Worked as an ordinary loom.

From the foregoing description it will be obvious that whenthespring-handle 13 is in the notch 7 O in the church or notched plate 71the loom is weaving; but when the spring handle 13 is in the notch 16 inthe weft-fork lever 17 the Working parts of the loom are stopped, whilethe automatic motion is in operation changing a shuttle. Again, when thespring-handle 13 is obstructed by the lever 77 the automaticshuttle-changing motion is pre- Vented from coming into action; but theordinary parts are working andthe loomweaving if the spring-handle 13 islatched in thenotch 70, but are stopped and everything stands if-thespring-handle is bearing against the lever 77. Further, it should bestated that when the path of the spring-handle 13 is clear andunobstructed by the lever 77 the Weaver can at any time stop the loomand all its motions by releasing the spring-handle 13- from the notch 70and letting it fly, back against the face-of the projection 85.-on theweft-fork lever '17.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is, in automatic shuttle-changing mechanism of the typeindicated- 1. In a stop-motion for automatic shuttle changing looms thecombination with the springhandle 13, of a knock-0E lever, and

means carried thereby for holding the spring purposes herein set forth.

In witness whereof I= have hereunto set my' hand in presence of twowitnesses.

JAMES MITCHEIJBGREY. Witnesses:

HERBERT ROWLAND ABBEY, JOSEPH- ALFRED WALKER.

